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我想将同一个表的不同结果合并为一个大的结果。mysql加入同一个表的不同结果集
SELECT host_name,stats_avgcpu,stats_avgmem,stats_avgswap,stats_avgiowait
FROM sar_stats,sar_hosts,sar_appgroups,sar_environments
WHERE stats_host = host_id
AND host_environment = env_id
AND env_name = 'Staging 2'
AND host_appgroup = group_id
AND group_name = 'Pervasive'
AND DATE(stats_report_time) = DATE_SUB(curdate(), INTERVAL 1 DAY)
SELECT AVG(stats_avgcpu),AVG(stats_avgmem),AVG(stats_avgswap),AVG(stats_avgiowait)
FROM sar_stats
WHERE stats_id = "stat_id of the first query" and DATE(stats_report_time)
BETWEEN DATE_SUB(curdate(), INTERVAL 8 DAY) and DATE_SUB(curdate(), INTERVAL 1 DAY)
SELECT AVG(stats_avgcpu),AVG(stats_avgmem),AVG(stats_avgswap),AVG(stats_avgiowait)
FROM sar_stats
WHERE stats_id = "stat_id of the first query" and DATE(stats_report_time)
BETWEEN DATE_SUB(curdate(), INTERVAL 31 DAY) and DATE_SUB(curdate(), INTERVAL 1 DAY)
所需的输出会是这样的......
host_name|stats_avgcpu|stats_avgmem|stats_avgswap|stats_avgiowait|7daycpuavg|7daymemavg|7dayswapavg|7dayiowaitavg|30daycpuavg|30daymemavg|....etc
SQL小提琴 http://sqlfiddle.com/#!8/4930b/3
如果你创建了一个工作会更容易使用[SQL Fiddle](http://sqlfiddle.com/)中的DDL和DML模型。在这一点上,我们无法知道每个表格会发送什么数据。如果你不创建一个sql小提琴,那么至少要提供表结构和示例数据。 – Taryn